107 results about "Intelligent optical networks" patented technology

This invention relates to a method for path selection in an intelligent optical network including: a, clearing a first and a second storage units and putting the source node in the first storage unit, b, putting a node with the least cost relative to the source node in the first unit into the second storage unit, c, if said node is a target one, then step d is carried out, otherwise, an adjacent node meeting the restrain condition and its corresponding path are put in the first unit, d, judging if the first one is empty, e, if it is not empty, step b is carried out, otherwise, judging if the target node is in the second storage unit, if so, then the path in the second unit is the shortest one.

This invention discloses a method for obtaining intelligent optical network restriction routes including: a route control module gets a request of enquiring connection route connecting the control module to merge links to the topology of links in the route database if said request asks for enquiring multiple connection routes at the same time, which are independent of nodes or links among the routes then the weight values of the links on the simplified topology are assumed to be equal, then the shortest path is selected, the simplified topology is processed independent of nodes or links according to the selected route then to select a shortest route again on said topology in terms of the condition of equal weight value and repeats it many times till enough routes are selected or no more routes can be selected, finally, the route control module feeds back several routes with the smallest weight value in the selected ones to the connection control module.

This invention discloses one light channel establishing method, device and system, which comprises the following steps: getting selected physical layer binding parameters allowance values on current wavelength points on business wavelength upper stream; determining and distributing point section linkage allowance values on current point according to received allowance values; when allowance values of the linkage meet set values according to business path, establishing light channel along the path.

A method for realizing light multicast in intelligent light network includes forming user group management base by utilizing service management module in management layer; applying light multicast mechanism managed by management layer and control layer and utilizing manner of dynamically setting up multicast route, adding and deleting leaf node, summing ¿C up link and setting up connection one by one to achieve light multicast on large network for saving a lot of routes and bandwidth.

The invention discloses a parallel signalling method for realzing light channel quick connection in the light passage. In the method, the middle nodes realize following steps in parallel: (1) sending an updated PATH message to the downstream node; (2) assigning the local inlet port wavelength resource, sending the RESV message which carries the resource assigning label; (3) driving the substrate hardware equipment rearrangment, receiving and keeping the local inlet port rearrangment; an aim node packs the state label to the RESV-F message, reversely sendes to the source node; a middle node brings the new resource obligate state, and transmites to the upriver mode through the RESV-F message; the source node returns the result to the user based on the resource obligate state to judge the connection is established whether or not. By using the invention, the cross connection establishing time delay is eliminated basically, the light passage connection establishing time is shortened effectively, the need of the intelligent light network band width provided by the distribution type application is satisfied.

The invention discloses a method for automatically acquiring connection relation of an optical network, which includes the following steps: a connection relation information model for each optical interface of a veneer is formulated according to physical position of the veneer in a node; the veneer modulates the connection relation information model into an optical signal for transmission before transmitting the optical signal through an optical output interface of the veneer; when the optical signal is received through the optical input interface, the connection relation information model is analyzed; when the connection relation information model varies, the connection relation information model is actively reported to a control processing module of the veneer and the control processing module actively reports the updated connection relation information model to a network management system; and the network management system reveals internal connection relation of the node by means of a graphical or text data table. The technical proposal of the invention requires no artificial connection assignment; and at the same time automatically acquires the connection relation among the network resources and also provides support for automatic resource discovery in an intelligent optical network.

The invention discloses a method of restoring a local span mesh network in an automatic switched optical network, which includes the following steps: when a service fails in a link, a link group of a span where the failure link is located is determined whether an idle link is existed or not, if so, the service is rearranged from the failure link to the idle link in the link group for transmission, and the restoration of the link is completed. The method embodies the flexibility of intelligent optical network protective restoration, has the characteristic of quick restoration without changing the prior linkage path, reestablishes a request by a source node to set up a new linkage when the local mesh network can not be restored, and particularly obviously improves the speed of network restoration when applied in a large scale network. The performance of the mode of local mesh restoration is better than that of the mode of nonlocal mesh restoration.

The invention discloses a traffic route selection method based on an optimal-cost intelligent optical network system, and the method comprises selection of the traffic loading route. The method disclosed by the invention is characterized by comprising the following steps: finding out all traffic routes which satisfy the traffic bandwidth requirement from a start node to source and destination nodes; and selecting the traffic route with the minimal comprehensive cost as the traffic loading route, wherein L is the total link length of all traffic routes, a is the unit price of the link, m is the number of nodes which are passed by all the traffic routes (containing the source and destination nodes of the traffic), b is the unit price of the node equipment, and mu i is the equipment capacity factor of the nodes passed by the traffic routes (containing the source and destination nodes of the traffic). The traffic route selection method provided by the invention can be used for selecting the traffic route with the optimal cost, thereby overcoming the defects of single considered factor, limited applicable network types, incapability of ensuring low cost for the traffic, and the like in the prior art.

The system consists of a network administration module, an intelligent administration module, a traditional administration module, an intelligent module, a traditional optical network function module and an interface module. The method thereof includes following steps: a) builds an end-to-end service path; b) analyses the service path to decide if the path consecutively passes through two or more than two intelligent net elements; if yes, then enters step c, otherwise, enters step e; c) marks the path consecutively passing through net elements as the intelligent segment; provides an option that is whether or not to create the intelligent service for users; if yes, then enters step d, otherwise, enters step e; d) sends down the end-to-end service, and creates the intelligent service in the intelligent segment, and creates non intelligent service in the remained segment; e) creates non intelligent service in the whole service path.

The invention aims at providing an intelligent optical network exchange device and an edge cashing method facing content center. The exchange device comprises a content server, a content information database, a redirection address database, a content center distribution database, an inter-domain route calculating unit and the like. The device conducts complementation on a control plane of an intelligent optical network under the condition that inter-domain route work and resource transmission are required in the optical network to achieve content management of domain granularity. The device selectively configures content servers distributed at the near end of the domain to conduct relay of content by judging ratio of the requested times of the content in a given domain occupied in the whole network requested times. The device achieves intelligent redistribution of high frequency requested contents in the network, pushes the content to the edge to the largest extent, remarkably reduces backbone network load, remarkably reduces long distance content transmission times, improves network utilization efficiency and achieves high-efficiency transmission of the content.

This invention discloses one device and method to update automatic exchange network devices, wherein, the device comprises one control plane function unit to send support of three layers of intelligent network structure from traditional transmission network management plane; one device fix network element agent, one control function unit inner interface, one outer interface, at least one element agent inner interface, at least one agent outer interface, network element control unit and management plane function unit interface.

The present invention discloses a resources allocation method utilizing tradition light transportation network resource, in tradition light transportation network net element intelligent optical network net element mixing networking state. It contains configuring at least one virtual flow rate engineering link between two intelligent optical network net elements connected with tradition light transportation network; issuing said configured virtual flow rate engineering link correlation attribute information in intelligent optical network. Hereby tradition light transportation network resource can be used for establishment light connection, and when fault occurrence, to make protection and recovery to interrupted service utilizing tradition light transportation network resource.

The invention discloses a system and method for realizing end-to-end call connection between optical networks. The method includes steps as follows: at least two control domains is set according with various equipment kinds and border node in ASON control domain is defined; intra-domain links is set for realizing call control of optical network system, operation topology diffusion, routing-transfer according with connection relationship between various control domains; intra-domain link including physical link linked directly between ASON control domains, at least one logical transmission interface set in transmission interface of border node connected with traditional optical network respectively and spaned at least traditional optical network control domain between ASON control domains, a logical link is formed by logical transmission interface partnership. The system and method can realize intelligent optical network spanning traditional optical network for completing end-to-end call connection establishment, and is beneficial to network convergence; operation route switch can be completed by call control if network failure occurs.

This invention provides a method and devices of acquiring contraint paths for loose routes in intelligent optical network. The method includes: acquiring sequence loose nodes, the source node, the destination node and the network topology, computing paths from the said source node to the first sequence loose node, merging all computed paths to connect them orderly in head and tail to form a complete path output. The devices include an acquiring device, a compute and control device and a path merge device which sets up a path in conformity with loose route restraint.

Operation of initial configuration for user group is carried out through management plane; or operations such as dynamic user logon, applying for building connection, disconnecting connection, modifying connection etc. can be carried out through client end. Action of control plane is in use for responding request from user end and management plane to carry out procedure for dynamic creating link. Management for user group in optical virtual private network (VPN) is implemented through service management module of management plane so as to avoid unreliability and out of time of PIT table for expanding user member through route protocol as well as security of user group management. The invention increases efficiency for building and managing VPN, and generates visible topological view of user network rapidly through address table of member of global group so as to guarantee reliability for managing OVPN group as well as expand network of multiple operation managers expediently.

The method includes following steps: (1) detecting real time information of network topology transmitted by using rote protocol between net elements in bidirectional multiplexing sectional rings of intelligent optical network; (2) using real time information of network topology to determine whether bidirectional multiplexing sectional rings are in ring protected rearrangement state; if yes, going to (3); otherwise, going to (1); (3) based on combination of topology change of optical network and alarm in service channel in higher order to determine bidirectional multiplexing sectional rings to be rearranged in intelligent optical network being in failure state of rearrangement. Through net element in service source end, the method launches relocating route to recover service so as to guarantee normal transmission of service when service rearrangement of multiplexing sectional rings in optical network is in failure.

The invention relates to an operational control method in intelligent light network. Network nodes receive the management request containing action-object and action-type. A manage request information is established based on the management request and is sent to each node along an operation service path. Each node on the operation service path receives the said management request information, and the corresponding management operation is performed based on the operation type. The said invention can perform the recovery operation management of outer protection for the whole connection or some subsection path and the management to the service of operator is increased.

This invention discloses a method for acquiring paths with protection entities in the intelligent optical network including the following steps: setting up different TE links for data links of different protection kinds, setting up a same TE link for the data links having the same protection attribute and belonging to the same protect entity, carrying out flooding of the protection entity information to diffuse the protection entity information in the entire route zone and acquiring paths with protection entities in the network according to the information.

The invention discloses an intelligent optical path network device with dual CPU and implementation method thereof. The intelligent network device includes: a network manager, a veneer, a main CPU and a slave CPU, wherein the main CPU calculates the cross connection based on the cross connection information in the configuration information sent by the network manager, and sends it to the veneer, the slave CPU calculates the cross connection based on the cross connection information in the configuration information sent by the network manager or the optical path topology state and / or optical path alarm information, and sends it to the veneer via the main CPU. According to the invention, two CPU systems are arranged in the intelligent optical path network device to operate the host computer software and intelligent software, which effectively solves the problem that the host computer software can not respond the commond of manager or maintenance information sent by the veneer in time due to the CPU resource preemption of intelligent software when the job is busy, therefor greatly enhancing the processing ability of the intelligent optical path network device.

The invention discloses a method for distributing wavelength of an intelligent optical network supporting differentiated services. The method comprises the following steps: giving different priorities to various services, and grouping the available wavelength according the priorities, wherein each priority corresponds to one wavelength group; searching free wavelength in the corresponding wavelength groups of the priorities according to the priorities of the services when the services come; if the free wavelength is in the wavelength groups, distributing the wavelength for the service, if the free wavelength is not in the wavelength groups, searching the free wavelength in the corresponding wavelength groups of the priorities according to the order of the priorities from high to low and distributing the wavelength for the service, and the free wavelength is still not in the wavelength groups, then refusing the service, wherein the wavelength groups are periodically and dynamically adjusted according to the pre-set period. The invention further discloses a method for distributing routing wavelength of the intelligent optical network supporting differentiated services. The method provided by the invention can guarantee the wavelength resources of the high-priority service and can improve the utilization rate of the network resource.

The invention discloses a system for automatically acquiring connection relation in an optical network. The system is applied in the internal connection relation of each node in an optical transport network and comprises a network management system device, a veneer control processing device, an optical signal receiving / sending processing device, a connection information modulation and insertion device and a connection information demodulation device. The system of the invention requires no artificial connection assignment; and at the same time automatically acquires the connection relation among network resources and also provides support for automatic resource discovery in an intelligent optical network.

The invention relates to a communication multi-level protection method based on an intelligent optical network, and belongs to the technical field of a communication network. The method provided by the invention utilizes programmable and automatic adjustment functions of the intelligent optical network, uses characteristics of large transmission bandwidth and small delay of the optical network, carries out differentiated protection on operation requests with different importance degrees, and solves a problem that breakage of a single optical fiber easily results in severe impacts. On the one hand, the level differentiated protection can provide targeted protection, high-level operations adopt services with a high protection level, low-level operations adopt services with a low protection level, the resource utilization rate is improved, the difficulty in searching a protection path is simplified, and the operation time is reduced; and on the other hand, the utilization rate of the bandwidth is improved through a shared protection function of the medium protection level and the low protection level, and corresponding reserved network resources can also be enabled to carry out dormancy, thereby saving electric energy consumption.

This invention provides a method for monitoring fiber dispersion timely in the high speed DWDM system, which applies a method that a monitor signal occupies a channel independently while the original network topological structure is not changed to avoid influence of digital signals in the traditional method to monitor signals, which can monitor the dispersion volume of each channel accurately and carry out dynamic optical routing on the optical path to provide a very good management plan to dispersion to the intelligent optical network wide of the next generation.

The embodiments of the invention provide a method of routing convergence in a control plane of an intelligent optical network, which includes: a function unit perceiving a service link state transmitting an alarm notification message indicating a failure in a service link to a routing protocol unit when the service link is in failure; the routing protocol unit confirming a service link failure in the control plane according to the alarm notification message. The embodiments of the invention also provide an apparatus of routing convergence in a control plane of an intelligent optical network. According to the embodiments of the invention, the establishment of a new service or re-routing may be implemented within several seconds or even hundreds of milliseconds after the service link failure in the control plane occurs.

The invention discloses a fiber optic communication network reliability assessment method. The reliability of a fiber optic communication network is assessed mainly by combining a network topology structure and service networking to establish a reliability assessment index system and an assessment model to provide reference for the reconstruction and improvement of a conventional network, the planning and construction of a new network and the designing of a re-protection scheme. The technical scheme provided by the invention is that: the method is implemented by the reliability assessment index system part and the reliability assessment model part. The reliability assessment index system is mainly based on three aspects, wherein the first aspect is a graph theory-based reliability assessment index mainly used for the reconstruction and improvement of the conventional network and the planning and construction of the new network; the second aspect is a service-based reliability assessment index mainly used for the designing of the re-protection scheme; and the third aspect is a fiber optic communication network reliability real-time measurement index mainly used for the real-time assessment of the reliability of a fiber optic communication network. The reliability assessment model is divided into a chain-like system model and a grid system model, can perform reliability assessment on the fiber optic communication network of any scale, and simultaneously is applied to the reliability assessment of an intelligent optical network.

The invention provides a method for avoiding the duplicate entrance of a single point in the joint routing of an intellective optical network with variant wavelength. In the method, an explicit joint routing is firstly computed aiming at business requirements; the method then determines whether the duplicate entrance situation of a single point exists in the explicit joint routing; if the duplicate entrance situation of a single point exists, the method inspects the resource status of the reentry point having the duplicate entrance situation and adopts a corresponding avoidance strategy according to the resource status; if the avoidance strategy has no effects, the method blocks the corresponding business requirement. The invention can lead the explicit routing in the IP layer business of the intellective optical network with variant wavelength not to enter a single network node for a plurality of times, thus reducing the probability of network node congestion, achieving the load balance of a whole network, and improving the network throughput.

The invention relates to a method for building soft permanent connection in intelligent light network. Wherein, it comprises that network manage system (1) sends soft permanent connection (4) request; the control plane (2) based on request and parameter calculates out route, obtains connection path, initializes the signal process in control nodes (21), and stores the route information; the control plane (2) feedbacks the route information via network manage protocol to the network manage system (1) to be browsed by operator; based on the browsed result, instructing the detachment of said connection path at the control plane (2) or build at the intelligent light network transmit plane (3). The invention browses the connection method to replace direct build, with which the connected route information can be seed before building SPC at transmit plane.

The invention discloses an intelligent control system based on internet of things. The intelligent control system based on internet of things comprises an intelligent control platform of the internet of things and a plurality of intelligent optical network clients. The invention further discloses an intelligent control method based on internet of things, wherein the intelligent optical network clients are taken as TCP clients, and the intelligent control platform based on the internet of things is taken as a TCP server end, so that an application to the wide area network is possible. Cross-platform management changes the traditional complex and dull message format interaction, changes to use command statements so as to be more direct, source-opening and further easily understanding, and matches with a command manual of the device in use so as to simplify butt joint difficulty and reduce maintenance costs. The intelligent control method based on the internet of things meets a purpose that a server is configured in a local area network to manage modular intelligent optical network units in the local area network, and also meets the capability that the server is configured in the wide area network to manage the modular intelligent optical network units in the different wide area networks; and finally, the costs of user use and server operation are reduced.

The invention provides an intelligent optical network simulations system and method. The system comprises an optical network management equipment, a rack-mounted server, a first physical ASON equipment, and an industrial personal computer (IPC); the optical network management equipment is respectively connected with the rack-mounted server and the first physical ASON equipment through an Ethernetswitch; the IPC is connected with the Ethernet switch; first virtual ASON equipment and second virtual ASON equipment are configured on the rack-mounted server; the first virtual ASON equipment is connected with multiple sets of second virtual ASON equipment, and the first virtual ASON equipment is communicated with the IPC and the first physical ASON equipment through the Ethernet switch; the first physical ASON equipment is connected with multiple sets of second physical ASON equipment; after determining the virtual-reality combined network topology, the analog simulation is performed on theservice of the intelligent optical network with the physical equipment expansibility according to the service connection information input by a user, the performance of the ASON equipment in the intelligent optical network organization is verified, and the system has guiding significance for the upgrade and update of the optical network.